Univariate and multivariable analysis in the derivation set for association of predictors with mortality in patients with idiopathic pulmonary fibrosis
| Variables | Univariate analysis | Multivariable analysis | ||
| Hazard ratio (95% CI) | P value | Hazard ratio (95% CI) | P value | |
| GAP index | 1.52 (1.31 to 1.76) | <0.001 | 1.23 (1.03 to 1.46) | 0.022 |
| Exertional hypoxia | 4.41 (2.80 to 6.94) | <0.001 | 2.92 (1.70 to 4.99) | <0.001 |
| 6MWD<250 m | 4.72 (2.99 to 7.46) | <0.001 | 2.49 (1.49 to 4.16) | <0.001 |
GAP, gender-age-physiology; 6MWD, 6 min walk test distance.